Which of the following is NOT a form that classified information can take?

Classified information can exist in various forms, and it's important to understand the characteristics of each to accurately identify what can be classified. Options such as written documents, electronic files, and verbal communications are recognized as legitimate forms for housing or conveying classified information.

Written documents are one of the most common means of classification, as they can clearly outline sensitive material in printed or handwritten form. Electronic files, similarly, often store classified data digitally, making it easily retrievable but requiring specific security measures for access. Verbal communications can also classify information, especially when discussing sensitive topics in secure settings where confidentiality is paramount.

The notion that physical artifacts would not be considered classified information may stem from a misunderstanding of what constitutes classification. In fact, physical artifacts can be classified if they contain sensitive technology, designs, or information relevant to national security. Thus, they are as much a form of classified information as any document or electronic file.

Recognizing that all listed forms could realistically contain classified information is crucial in understanding how classification applies across different mediums.